Bump notebook from 6.4.2 to 6.4.12

Bumps [notebook](http://jupyter.org) from 6.4.2 to 6.4.12.

---
updated-dependencies:
- dependency-name: notebook
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -67,7 +67,7 @@ nbdime==3.1.0
 nbformat==5.1.3
 nbsphinx==0.8.6
 nest-asyncio==1.5.1
-notebook==6.4.2
+notebook==6.4.12
 numpy==1.22.3
 packaging==21.0
 pandas==1.4.2